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Chimera from Greek mythology. Photo courtesy of Dr. Eugene Redmond

December 26, 2005
Meshing Human, Animal Cells Generates Debate
Some scientists are blending human cells with animals in order to make more human-like models for medical research. This so-called "chimeric" research has prompted heated debate inside and outside the scientific community.

The Science Unit investigates the procedures and ethical dilemmas surrounding chimeric research.

Key Features

Monkey Some researchers are implanting human neural stem cells into the brains of monkeys and others are looking to create a mouse with a brain entirely made of human cells. Read a Question & Answer about the purpose of this kind of research.

ScientistsLearn more about the kinds of chimeric research being conducted and the efforts to adhere to ethical guidelines in these extended transcripts with scientists featured in the NewsHour broadcast.
Main: The Science Reports
Main: Chimeras
Q&A
Extended Interviews
Lesson Plan
Online Forum
Drs. Richard Hynes and Jonathan Moreno, co-chairmen of the National Academy of Sciences' Committee on Guidelines for Stem Cell Research, answer your questions about the science and ethics surrounding chimeric research.
Additional Resources

Stem Cell Special Report

National Academy of Sciences


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